3 CONNECT | VMware vSphere 5.5 VXLAN Networking and Emulex OneConnect® OCe14000 Ethernet Adapters
CONNECT DEPLOYMENT GUIDE
1.0 Emulex Solution Implementer’s Series
This document is part of the Emulex Solution Implementer’s Series, providing implementers (IT administrators and system architects)
with solution and deployment information on popular server and software platforms. As a leader in network connectivity, monitoring and
management, the Emulex technology team is taking a lead in providing guidelines for implementing I/O for these solutions.
1.1 Executive summary
Emulex OneConnect OCe14000 family of 10Gb and 40Gb Ethernet (10/40GbE) Network Adapters are optimized for virtualized data
centers that have increased demands for accommodating multiple tenants in cloud computing applications. Virtual eXtensible Local Area
Network (VXLAN) provides the mechanism to implement virtualized network isolation over an existing infrastructure. The OCe14000
adapters are powered by the new Emulex Engine™ (XE) 100 I/O controller and equipped with Emulex Virtual Network eXceleration™
(VNeX) technology that eectively removes VXLAN packet processing overhead from the hypervisor. Freeing up CPU cycles can provide
significant performance enhancements to both I/O bandwidth and ESX host CPU eciency. With this increased optimization, the
administrator can now deploy more virtual machines (VMs) and experience optimal I/O performance within their virtualized networking
environment implementing VXLAN networking.
1.2 Introduction
VXLAN sets the stage for software-defined networking (SDN) functionality where the creation of logical networks for VMs can exist across
dierent physical networks by encapsulating the original L2 packet in a VXLAN header that includes the VNI associated with a VXLAN
segment that the VM belongs to. VXLAN incorporates an additional layer of packet processing in the hypervisor for incoming and outgoing
packets. The additional overhead can introduce performance implications such as degraded network performance, lower throughput
and inability to scale VMs due to higher CPU utilization. Emulex stateless ooading technology removes this burden from the hypervisor
by ooading VXLAN packet processing and checksum computations in hardware. This results in 150 percent improved aggregated
bidirectional throughput, 25 percent more CPU eectiveness and 75 percent increased server power eciency compared to Network
Interface Cards (NICs) without VXLAN ooad capability.
This document provides an example of how to configure a VXLAN network with the Emulex OneConnect OCe14000 10GbE and 40GbE
network adapters.
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